Results 151 to 160 of about 93,168 (289)

The Importance of the Larval Parasitoid Actia interrupta (Diptera: Tachinidae) in Low Density Eastern Spruce Budworm Populations

Entomologia Experimentalis et Applicata, EarlyView.
Actia interrupta is an important larval tachinid parasitoid during low‐density populations of the eastern spruce budworm. In the late 1980s during the outbreak collapse, Meteorus trachynotus was initially the most important species, but was replaced by A. interrupta. Host patch size and density had no impact on the parasitism rates by A.
Véronique Martel, Jacques Régnière, Jean‐Claude Thireau   +2 more
wiley   +1 more source

Pine Tree and Rocks

, 1937
Oil on masonite. Donated to Dallas Public Library by John William Rogers in 1958 along with Spruce watercolor and pencil sketches (also in Texas Artists: Paintings, Sculpture, and Works on Paper digital collection.
Spruce, Everett F. (Everett Franklin), 1908-2002
core  

Life‐History Traits and Overwintering of Actia interrupta (Diptera: Tachinidae), a Larval Parasitoid of Choristoneura fumiferana (Lepidoptera: Tortricidae)

Entomologia Experimentalis et Applicata, EarlyView.
Actia interrupta is a larval tachinid parasitoid that plays a key role in regulating low‐density populations of the eastern spruce budworm. We describe its immature stages, life‐history traits, host‐searching behavior, development, and confirm its larviparous reproductive strategy.
Véronique Martel, Jacques Régnière, Jean‐Claude Thireau, Rob C. Johns   +3 more
wiley   +1 more source

Stable and temporally shifted DNA methylation differences between 14-year-old Norway spruce epitypes under common garden conditions. [PDF]

Planta
Yakovlev IA, Viejo M, Tengs T, Olsen JE, Fossdal CG.   +4 more
europepmc   +1 more source

Management and tree dieback alter beetle assemblage structure and body size distribution in a temperate German forest

Ecological Entomology, EarlyView.
Forest management and climate‐induced tree dieback alter the structural characteristics of forests, which could subsequently lead to changes in the structure of beetle assemblages. Beetle assemblages in more open forests exhibited less even abundance distributions, with fewer, more dominant species (higher rates of decline (r), higher dominance (d ...
Julian Lunow, Katja Wehner, Matteo Trevisan, Nico Blüthgen, Michael Heethoff, Jörg Müller, Nadja K. Simons   +6 more
wiley   +1 more source

Spatial and temporal patterns of bark beetle and defoliator outbreaks, and their interactions, in the Pacific Northwest. [PDF]

Ecol Appl
Pane AM, Harvey BJ, Carroll AL, Tobin PC.   +3 more
europepmc   +1 more source

Temperature elevation broadens the dietary niche of an insect herbivore

Ecological Entomology, EarlyView.
The realised dietary niche in Chrysomela lapponica was the narrowest at 10°C, whereas higher temperatures (15–25°C) broadened the dietary niche by increasing preference for and survival on suboptimal host plants. Elevated temperature broadened the realised dietary niche through both direct effects on beetles and indirect effects mediated by temperature‐
Elena L. Zvereva, Vitali Zverev, Mikhail V. Kozlov   +2 more
wiley   +1 more source

Major changes in gene expression between strains of diapausing and non-diapause spruce budworm. [PDF]

PLoS One
van der Burg KRL, Gauthier J, Roe AD, Cusson M, Boyle B, Levesque RC, Marshall KE.   +6 more
europepmc   +1 more source

Kant's Solution to the Trilemma of Concept Formation

European Journal of Philosophy, EarlyView.
Abstract According to a widespread assumption, Kant's logical account of concept formation starts with comparison, where the latter involves concepts. On this assumption, the formation of a concept presupposes other concepts, so that the argument is threatened either by circularity, regress, or break‐off.
Daniel Erlewein
wiley   +1 more source

Tree species influence soil carbon quality but not total storage across horizons: European beech on Dystric Cambisol and Norway spruce on Entic Podzol. [PDF]

PLoS One
Patrmanová T, Burešová-Faitová A, Tejnecký V, Omelka M, Drábek O, Pavlů L, Thai S, Kopecký J, Ságová-Marečková M.   +8 more
europepmc   +1 more source